Sole-slitting machine



(No Model.)

L. P. HAWKINS.

SOLE SLITTING MACHINE.

N0. 514,36 L Patented Feb. 6, 1894.

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UNITED STATES.

PATENT OFFICE.

LORENZO P, HAWKINS, OF DEERING, AS SIGNOR TO THE GOODYEAR SHOE MACHINERYCOMPANY, OF PORTLAND, MAINE.

SOLE-SLITTING MACHINE.

SPECIFICATION formingpart of Letters'Patent No. 514,364, dated February6, 1894.

Application tiled May 6, 1893. Serial No. 473,193. (No model.)

T0 or whom it may concern.-

Be it known that I, Lonnnzo P. HAWKINs, of Deering, county ofCumberland, State of Maine, have invented an Improvement inInner-Sole-Slitting Machines, of which the following description, inconnection with the accompanying drawings, is a specification, likeletters and figures on the drawings representing like parts.

In the manufacture of boots and shoes it is found desirable to slit theinner soles transversely in thoseportions where the shoe is bent inwalking. To perform this operation expeditiously and economically, Ihave de vised the machine to be herein described, it having cutters soarranged as to out two or more rows of slits, the ends of the slits inone row preferably overlapping the ends of the slits in another row.

Figure 1, in front elevation, represents a machine containing my presentinvention. Fig. 2, a top or plan View of the sole support and thestripper plates; Fig. 3, a view looking upwardly from the line 50-90,said View being chiefly to show the cutters, the carriages to which theyare attached, and their adjusting devices, and Fig. 4 shows a portion ofa sole as it may be 'slitted with my improvedtmachine.

In the drawings, A represents a suitable table, from which rises a blockA having suitable cars A to which is secured by bolts B the ears B of asuitable bed B which thus becomes fixed to the table; This bed has atits upper side a suitable groove or way, preferably dovetailed in crosssection, as shown in Fig. 1, which receives a cutting-plate a upon whichthe sole to be out is laid, one end of said sole being pushed in againstthe registerin g gages a a, the cutting plate being free to he slid outand into the groove in the bed so as to put the part of the sole 3 whoslitted, as at 2, 3, in under the cutter blades Z). The bed I) hasmounted on it, preferably in an adjustable manner by screws 0, astripper 0 shown as having a series of fingers between which are slotsfor the passage of the blades b, the screws 0 entering slots 0' in theshanks of the strippers, so that said strippers may be adjusted asrequired to put them in proper position with relation to the blades 12,and the portions of the sole to be out. Preferably the shanks of thestrippers will be provided at their under sides with a channel or wayfor the reception of the shank of an edge gage d, the front end of whichis shown by dotted or inwardly from its dotted line position, as

it may be by releasing set screw2, serving as a gage for the edge of thesole, the shank of the edge gage having a suitable slot 3. The uprightpart of the frame-work has at its front end a suitable hearing A", inwhich is fitted to slide a plunger D to which is suitably jointed therod D of an eccentric strap D embracing a proper eccentric D on the endof a power actuated shaft D, said shaft, eccentric, link, plunger andbearing being common to power actuated hammers or pressers, so need notbe herein further described. The lower end of the plunger has clampedupon it by clamp screw E a block or head E, said head being suitablyshaped at its under side to receive like carriages E E entered theone'by a right and the other by a left hand screw-thread carried byadjusting screws E E each of said screws having an annular groove aboutit which receives a portion of the head E, so that the said screws,while they are capable of being rotated, cannot move longitudinally, andconsequently the carriages E E will be moved in suitable guiding groovesof the head, and by these the knives b, I), attached to said carriages,may be made to approach toward or be separated one from the other,according as it is desired that the cuts or slits made in eithershalloverlap one the other more or less or be removed from each other so asto make slits alternately in different lines, dodging slits.

I have attached to the carriages certain indicating fingers e whichco-operate with a scale 6 cut or marked on the head E, so that when theadjusting devices are turned, the positions of the acting ends of thecutters may be assured equally distant, or at the desired distance fromthe center or zero line of the scale.

With a sole placed upon the cutting-plate a under the strippers O, theplunger will be moved to descend, and the blades b will descend throughthe slots in the strippers and cut into and through the sole or for thedis tance desired, the sole so out being made flexible, so that it willbend with greater ease and adapt itself to the foot in walking.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. In a machine for slitting leather thefollowinginstrumentalities,viz:acuttingplate; strippers, and two seriesof blades set one series with relation to the other series to out tworows of slits, the slits of one row being in line with the spacesbetween the slits of the other row, and with devices to adjust theseparate rows of blades, and the carriages to which they are attachedwith relation to each other to place the rows of slits made by theblades more or less close together, substantially as described.

2. In a machine for slitting leather, thefollowinginstrnmentalities,viz:acnttingplate; strippers, and two seriesof blades set one series with relation to the other to out two rows ofslits, the slits of one row being in line with the spaces between theslits of the other row, and with devices to adjust the said blades oneset toward or from the other set, and devices to adjust the strippers,substantially as described.

3. In a machine for slitting soles, a cutting plate having gagedprojections, and made movable under series of cutters, combined with twostripper-plates, and with two sets of cutters the blades of one setbeing arranged in line with the spaces between the blades of the otherset, carriages to which the said blades are attached, and adjustingdevices by which to adjust the said sets of blades, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

' LORENZO P. HAWVKINS.

Witnesses:

STEPHEN O. PERRY, JAMES A. OONNELLAN.

